Aquatop 5-Stage Canister Filter W/Uv SterilizerProduct Description Aquatop 5 Stage Canister Filter W Uv Sterilizer Ingredients Key Features Five stage filtration system. Filters up to 525 gallons an hour. 9 watt uv sterilizer. Contains four flexible media trays that allow you to add the media of your choice. Suitable for tanks up to 175 gallons. Includes four fine filter pads (white) and a single coarse filter sponge (blue). Replacement fine filter pads bci# 003460 and course filter sponge bci#